1 Explain that a population pyramid shows the age and sex structure of a population. 2  Point to the horizontal bars, which show the percentage (or the absolute number) of males and females in each age group. 3  Have students interpret the chart.
1 A small-to medium-capacity dehumidifier (11-25 pints) for a living room can run around $100-$250 or more, depending on size and features such as a humidistat to set the desired humidity, auto-shut-off when the tank's full, energy efficiency and quiet operation.
Check items to add to the cart or select all. 1  ResMed ClimateLine â¢ Heated CPAP Tubing for the S9 â¢ CPAP Machine Regular Price: $51.00. 2  ResMed S9 â¢ Series CPAP Machines Disposable Hypoallergenic Filters Regular Price: $9.00. 3  ResMed S9 â¢ H5i â¢ Dishwasher Safe Water Chamber Regular Price: $36.95.